Knob construction.



A. ARBNS.

KNOB CONSTRUCTION.

APPLICATION FILED 0GT.15,1909.

Patented Feb. 22, 1910.

UNITED STATEfl PAENT @FFIQE.

AUGUST ARENS, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO P. & F. CORBIN, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

KNOB CONSTRUCTION.

T 0 all whom it may concern:

Be it known that I, AUGUST AnENs, a citizen of the United States, residing at New Britain, county of Hartford, Connecticut, have invented. certain new and useful Improvements in Knob Construction, of which the following is a full, clear, and exact description.

My invention relates to improvements in door knobs and the like, the object of the invention being to provide an improved seamless knob construction so arranged that said knob may be fitted with a lock, access to which lock is gained at the outer end of the knob.

In the present instance, I provide a construction which will readily admit of a solid or integral grip portion to the knob, at the same time providing a small and easily hidden entrance whereby a lock may be readily inserted and removed.

In the drawings I have shown only a pre ferred form of my invention, in which,

Figure l is a view of the inner end of a knob and shank, assembled. Fig. 2 is a longitudinal section of the grip portion of the knob, the other parts being shown in elevation. Fig. 3 is an end View of the shank and flange detached. Fig. t is a view of the inner end of the knob with the shank and flange detached and lock removed. Fig. 5 is a view showing the main body of the knob in section and illustrating the method of introducing the lock, the same being shown as partially inserted.

l is the grip portion of the knob, the same being hollow. This knob has an opening at its inner and another opening at its outer end. The opening at the inner end is almost completely surrounded with an inwardly directed flange 2, of suflicient depth to permit a screw thread of substantial area to be provided. The inner wall of the opening of the knob as well as the wall of said flange is threaded, as shown. At one or more points this flange is cut away, as at 2*, to provide a clearance recess for the purpose hereinafter described.

3 is a knob shank having a threaded flange 4: arranged to screw into the threaded opening at the inner side of the knob grip 1.

5 is the casing of a lock, in this instance, a pin-cylinder lock, which casing has a lateral ofiset 6, in this instance, said offset fur- Specification of Letters Patent.

Application filed October 15, 1909.

Patented Feb. 22, 1910.

Serial No. 522,709.

nishing the space for the pin tumblers and followers of such a lock.

7 represents a key-operable plug of a cylinder lock in the outer end of which the key entrance (not seen) is provided as customary.

88 are lugs between which the lateral offset 6 of the lock 5 rests when the parts are assembled.

9 is a dowel in this instance in the form of a screw, which enters partly into the flange at of the knob shank and the flange 2 of the knob shell, to prevent said parts from rotating when once assembled. The diameter of the opening at the inner end of the knob shell or body 1 is just suiiicient to admit the lock 5 when the same is tilted in the position shown in Fig. 5, in which position the lateral oftset 6 of the lock 5 stands in the clearance recess 2. The lock may now be swung into place in the grip l in the flange 2. By this arrangement the knob shell or grip may be produced complete in one piece lnstead of being made of two pieces as heretofore.

In almost all instances it will be understood that knobs are provided with the usual finishing rose 10, indicated in section in Fig. 2, this part merely serving to cover the inner end of the knob around the shank, and, in this instance, the joint between the flanges 4 and grip 1.

What I claim is:

l. A hollow seamless knob, comprising a grip portion and a shank portion, a passage through the grip portion formed by an opening in the inner end, and an opening in the outer end, of said grip, an inwardly directed notched flange surrounding the inner opening, said flange being threaded, a lock of greater overall width than the width of any part of the opening at the inner end of the grip, a portion of said lock being smaller than the notch in the flange to permit said lock to be inserted through said inner opening into the grip, a threaded portion on the knob shank adapted to fit the threaded portion of the flange, and means to prevent said grip and shank from rotating independently after being assembled.

2. A hollow seamless knob, comprising a grip portion and a shank portion, a passage through the grip portion formed by an opening in the inner end and an opening in the outer end of said grip, an inwardly directed notched flange surrounding the inner opengrip and shank from rotating independently ing, said flange being threaded, a lock of after being assembled, and a rose surroundgreater overall Width than the Width of any ing the knob shank and overstanding the part of the opening at the inner end of the line of division between the knob shank and 5 grip, a portion of said look being smaller the grip.

than the notch in the flange to permit said lock to be inserted through said inner opening into the grip, a threaded portion on the knob shank adapted to fit the threaded por- 10 tion of the flange, means to prevent said AUGUST ARENS.

Vitnesses:

G. ERNEST ROOT, M. V. COLLINS. 

